Push catch for doors



April 3, 1928. 1,664,576

T, F. STUART ET Ax.

PUSH CATCH FOR DOORS Filed July 16. 1926 ggc. j@

Patented Apr. 3, 1928.

UNITED` STATES" 1,664,576 PATENT" OFFICE.

THOMAS F. STUART AND HENRY A.l MOORE, OF' LOS ANGELES,v CALIFORNIA.

PUSH CATCH y FOR DOORS.

*Application `led July 16,

Our invention relates to a push catch for doors and the subject matterherein disclosed and claimed is kan yimprovement on the push catch fordoorsk that forms the subject mattei' of our co-pending application forU. S. Letters Patent filed March 25, 1926, Serial No. 97,193. -Theprincipal objects of our presentinvention are to lgenerally improve uponand simplify the construction of the latching'device that is set forthin our 'aforesaid co-j pending applicationas well as otherexisting formsof similar devices; to provide a push catch-that is especiallyapplicable for use on the doors of cupboards, closets, medicine cases,book cases, and ythe like; tol provide a structurethat maybe readilyadjusted to permit of its being easily and quicklyfinstalled ondoors ofdifferent thicknesses; and further, tol provide a latch of the characterlreferred tothatV may be used in connectionwithplain or ornamental knobsof wood, glass, metal, porcelain, or composition.

With the foregoing and other objects in view, our invention consists incertain novel features of construction and arrangement of parts thatwill hereinafter be more fully described and claimed andillustrated inthe accompanying drawing, in which- Fig. 1 is a vertical section takenlengthwise throughthe center of a push catch of our improvedconstructionand showing the samein position f or'use upon a door.

Fig. 2 is a sectional view taken on the line 2.-2 of Fig. v1.

Fig. 3 is a vertical sectionV taken on the line 3 3 of Fig. 1. ,Y

Fig. 4 is a horizontal section taken on the line4-4of Fig. 1. Y i

Referring by `numerals to the accompanying drawings whichillustrate apractical embodimentV of our invention,'.10 designates a door and 11 ashelf or partition to therear of said door, and for-the accommodation ofour improved latch a relatively small circular aperture such as 12isformed through the door in a'horzontal plane below the plane occupiedby the underface of the shelf or partition. Secured to the undersideofthe shelf or partition a short distance rearwardly fromits front edgeand in, line with the aperture 12 is a catch member 13 having adepending finger 14.

Positioned lagainst the inner face of door 10 below fthe.. opening 12 isa narrow verdriver orlike tool. [of tubular stem 26 is practically thesame as inwardly from 31 and arran i926. serial No. 122,820.

tically disposed plate 15, the upper portion of which overlies the innerend of the aperture12 and formed integral with the upper portion of thisplate and projecting into said aperture 12 is an externally `threadedtubular member 16.L j

Plate 15 isr secured to the door 10 in any `suitable manner, but weprefer to make use of a single screwv 18 that passes through an apertureinthe lower portion of said plate y and said screw being-seated-in thebody of the door. Formed integral with the sides of plate 15 areparallel ears 19- and seated therein is a pivotpn 20 that passes throughthe rear or mner portion of a horizontally disposed latching member 21.`vThe forward or'outer end of this latching member is provided r.x'lvith'an upwardly projecting hookl 22 that is adapted,`,when the door isclosed, to engage behind the depending finger 14 of catch member 13.Formed integral with the rear or inner portion' of latchingA member 21is an upwardly projecting'plate 23; and formed in the upper portionthereof is a short vertically disposed slot v24.w Screw-seated on thatportion of the tubular member 16 that projects into aperture 12, is theinternally threaded portion of a tubular stem 2 6 that projects alsubstantial distance outwardly from the outer face` of the door '10.

The outer end of this tubular member 26 is provided with a head 27 intheouter face of which is formed a slot y28 that is the point of a screwadapted to receive The external diameter the diameter of opening 12.

tubular member 16 iS ya `push rod 29 and formed on the outer end of thisrod is a button 30. Formed on rod 29 a short distance the button 30 isa. shoulder ed on said rod and bearing against this 's ioulder andagainst the end of tubular member 25 is an expansive coil l f spring 32.

The inner end portion of rod 29 is threaded as designated by 33 andmounted' on said threaded portion is la small blockf34 from the sides ofwhich dependears 35y that overlie the upper portions of ears 19. Seatedin the depending ears 35 are the ends of a pin 36 and said pin passesthrough short hori- `zontally'disposed slots 37 that are formed in j theears 19 and said pin also passes through the slot 24 that is formed inthe inner end portion of latching member 21.

The block 341, after adjustment upon the threaded portion 33 of push rod29, may be- Vsaid hook and the operating partsof the latch being held inthe positions shownrby the expansive power of spring 32 acting on rod29. l l

To release the 'catch in order to open the door, the knob 38 is engagedbetween the first and second fingers of the hand 4and the .thumb ispressed against button 30, thereby moving rod 29 inwardly against theresistance oflered by vspring 32. As .the rod is ythus moved inwardly,the pin 36 that is carried by the depending ears 35 of block 34: willtraverse the horizontal slots 37 and the bearing of the pin Siagainstplate 23 at the front edge of notch 2a will swing the latching member 21upon its pivot pin 20, thereby moving the free end ofsaid'latchingjmember downwardly and disengage hook 22 from finger 13. i

The door may now be opened and when the pressureof the thumb on button30 lis relieved, spring 32 will act to restore the operating parts totheir normal positions.v

When the door is again closed, the hook 22 on the free end of latchingmember 21 will strike against finger 14 and pass downwardly beneath saidfinger and immediately, under the influence vof spring 32, latchingmember 21 will swing upwardly to its normal horizontal position so thathook 22 will re-engage behind depending inger 14, thus latching the doorin nclosed position.

Tubular member 26`may beadjusted inwardly or outwardly upontubularmember 16 for the accommodation of'knobs of different lengths andblock 34 may be adjusted upon the threaded portion 33 of rod 29 in orderto control the positio'nof flatching member -21 and also to control thelength of its vertical swinging movement. Y

In applying our improved latching device toa door, it is only necessaryto bore a single small hole in. said door and lto set only two screws,oneof which fastens plate 15 to the inside of the door and the otherfastening plate 13 to the shelf 11.

A particularlyl desirable feature of our latchistheV arrangement of thehook 21 and hook actuating parts 34, 35, and 36 wholly beyond the innersurface of the door to which the device isapplied, for by sucharrangement it is not necessary to notch or rethe door for theaccommodation of the parts just mentioned.

A doorlatchofour improved constructionv is comparatively simple, may beeasily and quickly installed, may be readily adjustedA so as tobe'applied to doors of different thicknesses, and is adapted to receivepractically all sizes'and designs of' ornamental l knobs. 4

It will be understood that-minor changes in the size, form andconstruction ofthe various parts of our improved door latch may be madeand substituted for thoseherein shown andl described' without departingfrom the spirit of invention, the scope 'of which isset forth in theappended claims..

`We claim as ourinvention: Y 1. A door latch comprising-a tubularhousing that is adjust-able in length, a knob removably mounted'on theouter portion of said tubular housing, a plate at the inner end ot saidhousing, which `plate is adapted toibe secured to the door to which thelatchisapplied, la latching hook pivotally mounted on said plate, a'spring-held -push rod passing through the-tubular housing, a memberadjustably mounted on the inner end of said push rod and a pin and slotconnection: be-

end ofvsaid latching'hook.

2. A door flatch comprising al tubular housing that is adjustablein'len'gth,-aknob removably mounted-on the outer portion of `tween saidadjustable memberandtheinner 100 said tubular housing, a-fplate at theinner`V end of said housing, which plateis adapted to be secured to thedoor to which-the latch is applied, a pair l ofV spaced earsprojectingoutwardly from saidplate, a latchinghook having its innerend-positionedbetweeny and pivotally connected to said ears, the inner-end of said latching hook being provided with a slot, aV'spring-pressedl pushrod YeX- tending through the tubular housing, a

member adjustably arranged on the'inner "y end of said pushrod and vapin seated ink said adjustable member and occupying the slot in `theinner end of said latching hook.'

3. Ado'o'r 'latchv lcomprisinga tubular housing that is adjustablelinflength, 'a knob removably mounted ontheouter portion ofV having itsinner end positioned'between'and pivotally connected to said ears,'theffinner end `of .said latching hook being provided with a slot, aspring-pressed push lrod ,eX-

tending through v the tubular housing a Y member vadjustably arranged onthe innerV and of said push rod, a pin seated in said adjustable memberand occupying the slot in the inner end of said latching hook and meansfor locking said adjustably mounted hook to said push rod.

4. The combination with a door in which is formed an aperture, of alongitudinally adjustable tubular member passing through said aperture,a knob detachably mounted on the projecting portion of said tubularmember, a plate that is adapted to be secured to the inner face of thedoor to which the tubular member is applied, a pair of spaced earsprojecting outwardly from the sides of said plates, which ears areprovided with horizontally disposedslots, a' latching hook havin itsrear end arranged between and pivota ly connected to said ears, the.rear

portion of said latching hook being provided With a slot, a spring-heldpush rod passing through the tubular member, a block adjustably mountedon the inner end of said push rod, ears depending from said block andpositioned outside the ears on the plate and a pin seated in the earsthatdepend from said block, which pin passes through the slots in theears on the plate and through the slot in the inner end of the latchinghook. K

In testimony whereof We aix our signatures.

THOS. F. STUART. HENRY A. MOORE.

